Door or blind clamping machine



(No Model.) 4 Sheets-Sheet. 1. C. D. MARSH.

110011 0R BLIND GLAMPING MACHINE.

Pat ented Mar. 17, 1896 (No Model.) 4 Sheets--Sheet 2.

C. D. MARSH.

DOOR 0R BLIND ULAMPING MACHINE.

No. 556,684. Patented Mar. 17, 1896.

(No Model.) 4 Sheets-Sheet G D MARSH DOOR. OR BLIND GLAMPING MACHINE.

Patented Mar; 17, 1896.

4 Sheets-Sheet 4.

(No Model.)

C. D. MARSH.

- DOOR OR BLIND ULAMPING MACHINE.

No. 556,684. Patented Mar. 17, 1896.

Whine mes v AN DRIW lGRAHAH PNOTD-UTHDMIASN "(mil D c- UNITED STATES PATENT @rricn,

CALVIN I). MARSH, OF \VILLIAMSPORT, PENNSYLVANIA, ASSIGNOR TO THE ROWYLEY (K7 HERMANCE COMPANY, OF SAME PLACE.

DOOR OR BLIND OLAMPING MACHINE.

SPECIFICATION forming part of Letters Patent No.

Application filed January 24, 1 895.

To all whom it may concern.-

Be it known that I, CALVIN D. MARSH, of \Villiamsport, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Door or Blind Clamping Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in door and blind clamping machines, the object being to provide a machine actuated from a suitable source of power and designed to clamp doors and blinds, hold the same under compression until wedged, and then instantly release the article, the clamps being adjustable so as to operate on articles of various sizes.

My invention consists in the parts and combinations of parts as will be more fully described and pointed out in the claims.

In the accompanying drawings, Figure l is a sectional view. Fig. 2 is a plan view. Fig. 3 is a view in end elevation. Figs. 4 and 5 are enlarged detail views.

A represents a frame composed of end and side sections, and provided in its upper face with two clamping-plates B B extending lengthwise the machine, each clamping-plate being provided with a series of dogs C adapted to engage the side rails of a door or windowblind. The clamping section or plate 15 is rigidly secured to the upper face of the machine, near one side thereof, while the other section or plate B is secured near its ends to the blocks 0 G, which latter are mounted on screws D carried by the slides E. The slides E are in contact with the inner faces of the end sections of the machine and rest on and are supported by the lugs a, which latter project inwardly from said end sections and are provided at their ends with the inwardlytnrned tips or flanges c, which latter form bearings for the screws D.

The two screws by which the adjustable clamping-plate is moved toward or away from the other clamping-plate can, if desired, be

coupled up so as to move in lllllSOIl', but in 556,684, dated March 17, 1896.

Serial No. 536,119. (No model.)

the present instance I have provided each screw with a hand-wheel c c for turning each independently of the other.

From the foregoing it will be seen that one of the clamping-plates is rigidly secured to the machine-frame, while the other is connected near its ends to slides mounted on lugs or bearings projecting inwardly from the ends of the frames. These slides with the clamping-plate thereon are reciprocated through the instrumentality of the following parts:

His a shaft carrying a belt-wheel H and the two friction-cones H These cones are placed apex to apex, a space being left between them for the shifting devices which operate to shift the cones, as will be more fully described later on. These cones are splined to the shaft so as to revolvetherewith, but are free to slide thereon so as to bring either cone in frictional contact with the friction-wheel H The cones H are each composed of paper bodies h with metallic ends 7L, while the wheel 11 is composed wholly of metal. The wheel H is located in a plane between cones 11 and when centrally between them is not engaged by either. \Vhen the cones H are, however, shifted in either direction, one cone H is moved into contact with wheel 11 thus causing the latter to revolve in one direction, and when shifted in the opposite direction, so as to bring the other cone I1 into contact with wheel 11 the latter is rotated in the opposite direction.

The wheel ll is secured to shaft ll, which latter is mounted in bearings H and provided with a pinion ll. This pinion ll" engages the teeth of pinion H secured to crank-shaft I. Shaft I is mounted in bearings in the ends of the frame, and is also supported between its ends in bearing 1, and is provided near its ends with cranks 1' which latter are connected by pitmen I with the slides E. This crank-shaft makes simply one-half a revolution and in this lllOYG-lllellli throws the movable clamping-plate B from one extreme to the other. In Fig. 1 the clamping-plate is at its inner throw or in its position while clamping, and to release the door or blind held therein the crank would have to move over to its other extreme. The movement of the clamp B is uniform for all sizes of. work, and the adjustmentsfor the various sizes is, as before stated, accomplished by the screws D.

J is a Y-shaped lever, one arm, J of which is preferably bifurcated at its lower end to engage the collar J connecting the double cones H while the other arms, J are each provided with a set-screw J The arms J rest under one of the cranks, and the two setscrews are adapted to engage the crank and be moved thereby sufliciently to move the sleeve J lengthwise a sufficient distance to separate the frictionwheels and instantly release the crank-shaft.

Connected to the sleeve J is the shiftinglever K, which latter is connected, through levers K and K with the double treadle K Now by bearing down on one end of the treadle the conesH are moved lengthwise, the shaft thus bringing one of the cones in contact with the friction-wheel H Now for the purposes. of illustration I will suppose that the parts are in position shown in Fig. 1. at the start or the clamps are closed. The engagement of the frictional Wheels will operate the crank-shaft through the gearing heretofore described and turn the crank in the direction of the arrow or to the right. As the crank approaches its extreme throw, as it completes a half-revolution, it engages the set-screw in the righthand arm J rocks said arm slightly, and shifts the sleeve carrying the cones H sufiiciently to disengage the friction-wheels. The movable clamping-plate would then be in open position or in a-position to receive a door or blind and the crank would be in position slightly below a horizontal plane, thus looking it against movement until returned by the friction-wheels.

After a door or blind has been placed 011 the dogs the treadle is actuated to throw the other friction-cone into contact with the frictionwheel, thus reversing the motion of the crankshaftand bringing it back by a return movement to the position shown in Fig. 1. As the crank nears its position, as shown in Fig. 1, it strikes the set-screw in left-hand arm J and shifts the cones, as before described, thus releasing the friction-wheel and withdrawing the power from the crank-shaft. The outer end of the latter has, however, by this time passed below the horizontal center of the shaft, thus locking the crank, pitmen and clamping-plate, and holding the work firmly pressed or .olamped together. The parts constituting the door or or pinned, as desired, after which it is re,- leased and another inserted. By means of the double treadle and cones the direction of rotation of the crank-shaft can be instantly changed, and by means of the screws the machine can be adjusted for doors or blinds of any size within the limits of the machine. The greatest pressure is applied when the joints are nearly closed, and the parts are blind are thus wedged' held under this pressure until wedged. By moving the treadle which actuates the friction-gear the article is released.

It is evident that numerous slightchanges might be resorted to in the relative arrangement of parts herein shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not restrict myself to the exact construction of parts herein shown 5 but.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a frame, and movable elamping-plate, of aroeking crank-shaft, pitmen extending from the cranks for moving the movable clampingplate, and mechanism engaged and operated by the crankshaft in each of its extreme movements for stopping the movement of the movable clampin g-plate, substantially asset forth.

2. The combination with a frame, a movable clamping-plate, a crank-shaft, and pitmen ex tending from the cranks to slide the movable elamping-plate, of gearing, a lever for connectingand disconnecting the gearing, said lever operated by. the engagement therewith of the crank-shaft to automatically disconnect the gearing, andadouble treadle conneeted with said lever: to swing it in either direction, substantially as set forth.

3. The combination with a frame, a movable :clampingplate, a pitman, and a crank-shaft,

of gearing, apivoted lever having a pair of arms either of which .is adapted to be struck by the crank-shaft to shift and disconnect the gearing, and means for connecting the gearing, substantially as set forth.

4. The combination with a movable clamp- :ing-plate, a crank shaft and pitmen connecting the plate and cranks, of means for actuating the crank-shaft and means engaged by the crank as the latter passes below a horizontal plane for stopping the clamping-plate, substantially as set forth.

5. The combination with a movable clamping-plate, a crank-shaft and pitmen connecting the plate and cranks, of means for actuating the crank shaft. in either direction, means engagedby one of said cranks as the latter approaches the end of its throw, for stopping the clamping-plate,'and devices for reversing the direction .of movement of the shaft.

6. The combination with a stationary clamping-plate, a crankshaft and pitmen connecting the crank-shaft and movable clampingplate, of a driving-shaft, friction-cones thereon a friction-wheel secured to a driven shaft and adapted to be engaged by the cones,means operated by the crank-shaft for shifting the cones whereby either cone can be moved into contact with the friction-wheel, and devices connecting the driven shaft and movable clamping-plate.

7. The combination with clamping-plates,

a rook-shaft and pitman connected with one In testimony whereof I have signed this of said clamping-plates and adapted to reeipspecification in the presence of two subsorib- 1o rocate it in opposite directions, of reversinging Witnesses. gearing oonneetec with said rock-shaft and a L V 5 reversing treadle whereby power may be CALVIN MARSH transmitted to the rock-shaft to turn it in \Vitnesses: either direction and to open or close the clamp J OS. G. STEWART, hug-plates, substantially as set forth. D. K. FORESMAN. 

